9972398256 has 40 divisors (see below), whose sum is σ = 25990025520. Its totient is φ = 3294713856.

The previous prime is 9972398131. The next prime is 9972398329. The reversal of 9972398256 is 6528932799.

It is a self number, because there is not a number n which added to its sum of digits gives 9972398256.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913861 + ... + 924708.

It is an arithmetic number, because the mean of its divisors is an integer number (649750638).

Almost surely, 2^9972398256 is an apocalyptic number.

It is an amenable number.

9972398256 is an abundant number, since it is smaller than the sum of its proper divisors (16017627264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9972398256 is a wasteful number, since it uses less digits than its factorization.

9972398256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838693 (or 1838687 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 60.

The square root of 9972398256 is about 99861.8959163103. The cubic root of 9972398256 is about 2152.4506583269.

The spelling of 9972398256 in words is "nine billion, nine hundred seventy-two million, three hundred ninety-eight thousand, two hundred fifty-six".